1,3-Dimethyl-5-chloro-7-[4-[ethyl(2-cyanoethyl)amino]phenylazo]-1H-benzotriazole-3-ium;5-Chloro-7-[[4-[(2-cyanoethyl)ethylamino]phenyl]azo]-1,3-dimethyl-1H-benzotriazol-3-ium;6-Chloro-4-[[4-[(2-cyanoethyl)ethylamino]phenyl]azo]-1,3-dimethyl-1H-benzotriazol-3-ium
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